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Finding the Fourth Proportional to 133,798.95, 184,739.42 and 86,135.34

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Solution

The fourth proportional to 133,798.95, 184,739.42 and 86,135.34 is: 118,929.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,798.95 : 184,739.42 = 86,135.34 : x
  2. Step 2: Convert to fraction form
    133,798.95/184,739.42 = 86,135.34/x
  3. Step 3: Cross multiply
    133,798.95x = 184,739.42 × 86,135.34
  4. Step 4: Simplify right side
    133,798.95x = 15,912,592,753.10
  5. Step 5: Solve for x
    x = 15,912,592,753.10/133,798.95
  6. Step 6: Final answer
    x = 118,929.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.